<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/he" method="post">
    账号<input type="text"  name="username" placeholder="name"><br/>
    密码<input type="password"  name="password" placeholder="password"><br/>
    <input type="submit">

</form>
</body>
</html>